2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-85

  • question_answer
    If a body of mass 3 kg is dropped from the top of a tower of height 45 m. Then its kinetic energy after 3 sec is                       \[[take\,\,g=10m/{{s}^{2}}]\]

    A) 557 J

    B)                    1450 J

    C) 1050 J              

    D) 1296 J

    Correct Answer: B

    Solution :

    [b] After 3 sec its velocity \[{{v}^{2}}={{u}^{2}}+2gh=0+2\times 10\times 45\] \[K.E=\frac{1}{2}m{{v}^{2}}=\frac{1}{2}\times 3\times 2\times 10\times 45\] \[=145\times 10=1450J.\]


You need to login to perform this action.
You will be redirected in 3 sec spinner